Beyoncé Giselle Knowles (born September 4, 1981), often known by the mononym Beyoncé, is an American recording artist, actress and fashion designer. Knowles rose to fame in the late 1990s as the lead singer of the R&B girl group Destiny's Child, one of the world's best-selling girl groups of all time. The Recording Industry Association of America (RIAA), listed Knowles as the top certified artist of the decade.To date, she has sold 75 million records worldwide making her one of the best-selling music artists of all time.